Lighting device



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July v16, 19354. W. W. sAcKETT LIGHTING DEVICEv Filed Nov. 20, 1931Patented July 16, 1935 LIGHTING DEVICE Warren W. Sackett, Milwaukee,Wis., assignor to Milwaukee Gas Specialty Company, Milwaukee, Wis., acorporation of Wisconsin yApplication November 20, 1931, Serial No.576,251v

7 Claims.

rMyinvention relates to igniters for gas burners and has particularrelation to an igniter for igj niting a heater burner from a pilotburner.

I have considered the problem ofigniting gas- 51eous fuel as used inovens, heaters, stoves and the like, and have observed that the devicesof the prior art are not always satisfactory for the reason that theyare `not positive in operation, inasmuch as `at times the igniting gasburns so rapidly as to prevent ignition of the gas issuing "from theburner to bel ignited.

It has also beenobserved that in most failures of this type, the failureto ignite the burner prop- ,erlyfpermits gas to escape from the ovenburner and the `accumulation of the escaping gas mixing withthesurrounding air forms a combustible and highly `explosive mixturewhich may be ignited lbyan adjacent pilot flame or otherwise and resultAin a serious explosion. A large accumulation of gas of this type isalso. dangerous due to the fact that the gas possesses a highly toxicvalue .and is dangerous to persons in the immediate vicinity; Y.

It isthus necessary, in devices of prior types, for the operator tomaintain a close observance of the appliance each and every time the gasis turned on and the ignition deviceis operated. It is thus seenthat inthistype of device the operationis dependent upon the skill Yandcarefulness nof the operator.

` Thepresent invention therefore contemplates providing an ignitionVdevice which is reliable and 'positive in operation, ,and which is ofsimple construction so that it may be operated easily and safely.". t`My ignitionldevice may be used or modied for use `inconnection with anytype of lighter, such as the fflash? type of igniter or the gravity typeof. lightenl The device is simple, reliable, sturdy andinexpensive. Y 'yOther and furtherfeatures andobjects of the invention will be moreapparent to those skilled in. the `art upon a consideration of theaccompanying Adrawing and following specification,

wherein is disclosed a single exemplary embodif ment of the inventionwith the understanding, however, that, such changes may bemade thereinas `fall` vwithin the scope of the appended claims without departingfrom the spirit of the invention. .j Y

In said drawing:

Figure V1 is a plan View of my ignition device as` applied tol theburners of a stove and an oven orlike 4devicesin side by side relation;

Figure AV2 is a view partly in section and partly plied to a ash type oflighter.

in elevation of my lighter device as applied to a gravityf type oflighter; n Y j Figure 3 is a view partly in elevation andpartly insection of my improved lighting device as aptaken substantially alongthe line 3f3 of Figure Figure 4 is a detailrperspective View showing therelationship betweenthe end of theflighter l tube and the pilot tip.

The present invention deals particularly: with an ignition system inwhich the flame from' a pilot light is conducted to the heater burnerwhen ignition of the gas issuing fromthe heater burner is desired. Inthe embodiment of the invention shown and described the igniter is usedfor igniting the gas issuing from the burner of an oven heater or thelike which is usually situated in side by side relation withthe topburnersof a y stove, but it is apparent, however, that the device TheView "is burners i! by means of supply pipes I2` and the flow; of gasthrough the Vsupply pipes into the burners Il is controlled by means ofvalves and mixing chambers (not shown) of the usual construction. i l tIn the embodiment Vof the inventionshown in Figures 1 and 3, .theigniter s-shown in connecfltion with a "flash type of igniter used fonigniting the stove burners. l The igniter system includes a lighter tubel I3 which is connected with the manifold l0 by means of a valve I4 ofthe Y push button type which is set to delivera small quantity of gas tothe pilot light so long as the plunger button of the valveis notdepressed. f, If only this minimum amount of gas is supplied the gasissues from the upper ports I6 and from the `creased volumefrom thelower ports It.` If any ofthe valves controlling the flow of gas Vin thepipes l2 are opened, the gas issuing from the corresponding burner orburners II will be ignited by the flash from the pilot llame.

Supplementary ports 20 are provided in burner I1 for relay purposes tosupport the main flame I9 when the rate of flame propagation is lessthan the rate of flow of the gas from the ports I6. The pilot flame ispreferably protected from drafts and the like by means of a cup-shapedbase 2I over-which a cup-shaped or cylindrical hood 22 ,is'telesco-pedtoform aninclosure. The base 2I is provided with openings 23 therein topermit the entrance of air to the hood to support combustion of thepilot flame and another opening 24 is provided in the top of the hood 22to permit the products of combustiontoescape from the hood. Otheropenings 26 -ar'ewprovided in the side Wall of the hood to permit theilash Vflame to reach the burners I I.

Still another opening 21 is provided in the sid Wall of the hood inorder that a pipe,lighter or conduit .tube 2,8 Amay .be inserted throughthe opening. The inner end of the pipe 2B preferably v-.coverswone .ormore of thelower ports i5 in the v pilot `buirner I1 and is providedwith a hollow annularchannelshaped .lug 29 adapted .to encircle'.,thepilot bur/ner I1 and ,act as a support for the inner end of thepipe 28, as shown in Figure 4. {I heputerendof `the ,pipe28 passesthrough an .,enlarged'opening inthe wall 3| of the oven and ends in aposition adjacent the ports 32 of the ,.ovenburner 433. The tube28 ispreferablyfprovided withanarrow slot ,34.along itsupper por-.,tiontopermit the escape of Agas from the tube .in a l ong,. narrowstream which, when ignited, forms a ribbon ofilameconnecting the pilotburner and theheaterburnen Gas` for the tube 28 is supiiliectinthisembodiment of the invention, from fthe ports .I 6 in the pilot burner.

V. Gasis.suppliedto thefovenburner 33 through .ayalve .3,6, .which isadaptedto regulate the ow of gas to theburnenand amixing chamber 31 Mior. r r u'xing.the gas with air .to improvecombus- -itionof jtheggas,Aboth of .whichdevicesare of the usual construction.

In operationof .thedevice shown in -Figures l ,an c 1 3, gas is.admitted to `thegpilot tube .I3 and the y pilot burneri] .by means ofthe valve'I4, and the issuing yfrom the pilot burner is ignited to formaiame I8 which is `kept burning continuously, ,21S long as gasispsuppliedto the manifold Ifone of the stove burners II is to be lighted, thevalyecontrolling the flow of ,gas through the pipes I2 to the properburner I I is turned on. s oonasgas is Iissuing from the ports of theburnerjlj, the buttonof the valve v I4 controlling the f iowof gaswithin `the lighter* Vtube I3 is depressed and -a greatly increasedIiiow of gas results. Vincleased iiowof gas results in flames I,9 ,at eachpof vthe ports of the pilot burner which iare of sufficient length to.reach the burners II to ignite the gas issuing from any or all vof theburners.

7.Sigloeth epipeml coversone or more of the ports L6 in the pilotburner, gas issues through the `ports in suilicient quantities to fillthe tube 2li. Ifheend of the tube adjacent the pilot flame is lQscdexcept for the Opening .3.4 .along the top of the tube, and thereforethe gas within the tube isxnot ignited. The gas issues through the slotat the .upper part of the tube in along, narrow ribbon which isignitedbythe pilot flame I 8 `to burn in 1a ribbon of flame 38 along thetop of the tube. '*Ifhe gas winch does not issue through the slot 34passes out the outer end ofthe tube adjacent the 'burner .8.3 .to .form.an elongated .name 39 which is quite suitable for igniting the gasissuing from the ports 32 in the burner when gas is admitted to theburner through the valve 33 and mixing chamber 31.

As soon as the gas issuing from the ports 32 has been ignited, thebutton I4 is released to decrease the flow of gas in the tube I3 and,since the pressure of the gas' issuing from the ports I6 is not greatenough to cause the gas to ll the tube 28, the flame`34 dies out.

In the embodiment of the invention shown in Figure 2, the top burnersmay be ignited in vthe same manner as when the gravity type of lighteris used, that is, the plunger of the iiash control valve, such as thevalve I4, need not be depressed or otherwise operated. Gas is admittedto the pilot burner I1 in suiiicient quantity to maintain an even lowflame. Each of the tubes 28a and 28h is provided with a suitable lug23a, which encircles the pilot burner I1 and which is engaged in asuitable depending cylindrical iiue member 4U projecting from theopening 24 in the housing or hood 22. The tubes project `throughsuitable openings 26a formed in the hood 22, toward therespectiveburners, the tubetaprojecting toward the oven burner. The hood 22 has acutout portion 21 immediately above the entrance of the tube 28a and thetube is slotted to provide a passage for the flame from theports I6through opening 21 and along the upper slotted surface of the tube 28ato the .burner 3.3.

Referring in more detail to the tube 28a, this tube is inclineddownwardly from the pilot burner to the .heater burner 33, and anextending portion 4I lof the tube 28a rests over the upper periphery of.the burner 33 to support the outer end of the tube. The tube isprovided on its lower side with an opening 42 adjacent the ports 320ithe burner.

If desired, the top burners II may be provided with the gravity type ofignition and may be provided with tubes 2817 projecting through suitableopenings .Za in the hood 22 in the same manner as described inconnection with tube 28a. burners and are suitably secured thereon sothat when it is desired to ignite the burners gas issuing from the portsof the burners will travel before. If it is desired to operate theheater 33,

gas is admitted to the heater through the Vvalve r36 and mixing chamber31. The gas passes out of vthe openings 32 in the heater 33, risesupwardly through the opening 42 of the tube 28a, into the tube and iscarried upwardly and inwardly through the tube to the inner end thereof,where the gas issuing from the end of the tube is ignited by the iiameI8a. The gas issuing through the slot' 34 of the tube is ignited to forma long ribbon of llame 38a which in turn ignites gas flowing from theport 32 in the heater 33, thus igniting all of the gas issuing from theheater.

It is apparent that because the gas in the tube 28 is not mixed with airto any great extent, combustionI Within the tube will not occur. The

These .tubes project to the respective top gas issues through the slot34 in a narrow stream, and since the gas has not been mixed with air,rapid ignition does not occur and the gas burns with a steady flame Welladapted for igniting the gas issuing from the heater burner. The deviceis simple, reliable and inexpensive.

Although I have described specific embodiments of my invention, it isapparent that modications may be made by those skilled in the art. Thesemodications may be made without departing from the spirit and scope ofthe invention as set forth in the appended claims.

I claim as my invention:

1. In a burner ignition system, a pilot burner having a plurality ofports, one of which is utilized to provide gas for a pilot flame, aheater burner, a lighter for conducting flame from the pilot burner tothe heater burner comprising a tube having an opening along its upperside, and means for introducing gas under increased pressure throughsaid pilot burner to said tube for ignition by said pilot flame whenignition of the heater burner is desired.

2. -In a burner ignition system, a pilot burner flame, a heater burner,a lighter for conducting llame from the pilot burner to the heaterburner comprising a tube extending over a port of the pilot burner, andmeans for introducing gas under increased pressure into the pilot burnerwhereby the tube is lled with gas which escapes through the opening inthe tube and is ignited by the pilot llame to conduct the flame to theheater burner when ignition of the heater burner is desired.

3. In a burner ignition system, a pilot burner having fuel supply means,a heater burner, a lighter for conducting flame from the pilot burner tothe heater burner comprising a conduit having a longitudinal opening atthe upper side thereof, and means controlling said pilot burner fuelsupply means for lling the conduit with gas under' increased pressurewhen ignition of the heater burner is desired.

4. In a domestic gas range having an oven burner and a plurality of topburners, a burner ignition system comprising a pilot burner having aplurality of ports, one of which is utilized tol provide gas for a pilotflame, means for supplying fuel to said pilot burner, a heater burner, alighter for conducting flame from the pilot burner to the heater burnercomprising a tube having an opening along its upper side, and meanscontrolling said fuel supply means for lling the tube with gas underincreased pressure when ignition of the heater burner is desired.

5. In an ignition system including a plurality of gas burners and anoven burner removed therefrom, said system having a flash igniterdisposed centrally of said gas burners, the combination with said flashigniter of a conduit leading from said igniter to a pointadjacent saidoven burner, said conduit having a longitudinal slot in the top thereof,and means for introducing gas under pressure through said igniter intosaid conduit, said gas being ignited by said igniter and passing alongsaid slot to said oven burner to ignite the same.

6. In combination, a pilot burner comprising a torch head havinglaterally extending ports, a

`hood over said torch head having openings in alignment with said ports,means for supplying fuel to said torch head, a conduit supported in oneof said hood openings and enclosing one of said ports, said conduithaving a longitudinally extending slot in the top thereof, an oven wall,an oven burner disposed on the side of said wall away from said pilotburner, said conduit extending through and being supported by said walland terminating at a point adjacent said oven burner, and meanscontrolling said fuel supply means for projecting lighting flamesradially outwardly from said ports through said hood openings and forintroducing fuel into said conduit, said fuel being ignited along saidslot to provide for ignition of said oven burner.

7. In combination, a plurality of gas burners, an oven burner removedtherefrom, a hash igniter idisposed centrally of said gas burners andhaving vertically spaced port means, means comprising `a slotted tubeenclosing one of the lower of said port means for forming a relativelyrestricted gas and air admixture path to said oven burner, means forintroducing gas under increased pressure into said igniter to projectlighting flames from said igniter toward saidgas burners, said lastnamed means providing for flow of a stream of relatively free gasthrough said tube toward said oven burner, said gas being ignited alongthe slot in said tube by the ame from an upper one of said port means.

WARREN W. SACKETT.

